Tous les combattants
 | Brian Mitchell | 1-0-0 REC | #7403 |  |
 | Brian Moore | 2-1-0 REC | #4916 |  |
 | Brian Ortega | 8-5-0, 1NC UFC | #268 | |
 | Brian Stann | 6-5-0 UFC | #1991 | |
 | Brian Stapleton | 0-1-0 REC | #7108 | |
 | Brian Torres | 1-0-0 REC | #6194 | |
 | Brianna Fortino | 1-1-0 UFC | #4605 | |
 | Brice Belghazi | 0-2-0 REC | #3374 |  |
 | Brice Picaud | 0-1-0 REC | #5300 | |
 | Brigid Chase | 0-1-0 REC | #6288 | |
 | Bristol Marunde | 0-2-0 UFC | #4189 | |
 | British Boloyoang | 0-1-0 REC | #5263 |  |
 | Brittany Camozzi | 0-2-0 REC | #6960 | |
 | Brittney Cloudy | 0-4-0 REC | #3934 | |
 | Brittney Elkin | 0-2-0 REC | #4547 | |
 | Briven Sullivan | 1-0-0 REC | #1747 | |
 | Brock Jardine | 0-2-0 UFC | #6312 | |
 | Brock Larson | 3-3-0 UFC | #3228 | |
 | Brock Lesnar | 4-3-0, 1NC UFC | #456 | |
 | Brodie Farber | 0-2-0 UFC | #5354 | |
 | Brogan Walker | 0-3-0 UFC | #3042 | |
 | Brok Hopwood | 0-1-0 REC | #6084 | |
 | Brok Weaver | 1-2-0 UFC | #4124 | |
 | Bruce Bouisson | 1-0-0 REC | #7849 | |
 | Bruce Souto | 1-2-0 REC | #5089 |  |